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Unix Commands Interview Questions & Answers

Below we have listed all the Unix Commands Interview Questions and answers. Feel free to comment on any Unix Commands Interview Questions or answer by the comment feature available on the page.

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Using the commands ps, cut, tr and kill, along with pipes, write a command that will find all sleep processes running on the system and kill them?
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Which command is used to delete all files in the current directory and all its sub-directories?
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Difference Between Grep and Find command ?
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What is the difference between cat and more command?
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Is it possible to count number char, line in a file; if so, How?
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What is the significance of the ?tee? command?
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Explain the steps that a shell follows while processing a command.
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What difference between cmp and diff commands?
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What does the command ? $who | sort ?logfile > newfile? do?
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What does the command ?$ls | wc ?l > file1? do?
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Explain kill() and its possible return values.
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Is ?du? a command? If so, what is its use?
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Write a command to display a file?s contents in various formats?
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How does the kernel differentiate device files and ordinary files?
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Is it possible to create new a file system in UNIX?
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What is the use of the command "ls -x chapter[1-5]"
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Write a command to kill the last background job?
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What is redirection?
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How to terminate a process which is running and the specialty on command kill 0?
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How to switch to a super user status to gain privileges?
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